17 Language support library [support]

17.9 Exception handling [support.exception]

17.9.5 Abnormal termination [exception.terminate] terminate [terminate]

[[noreturn]] void terminate() noexcept;
Effects: Calls a terminate_handler function.
It is unspecified which terminate_handler function will be called if an exception is active during a call to set_terminate.
Otherwise calls the current terminate_handler function.
[Note 1: 
A default terminate_handler is always considered a callable handler in this context.
— end note]
Remarks: Called by the implementation when exception handling must be abandoned for any of several reasons ([except.terminate]).
May also be called directly by the program.